Classification
576 - Genetics & evolution
610 - Medicine & health
9
000 - Computer science, information & general works
8
333 - Economics of land & energy
7
580 - Plants (Botany)
6
600 - Technology
5
380 - Commerce, communications & transportation
4
140 - Specific philosophical schools
3
700 - The arts; fine & decorative arts
3
363 - Other social problems & services
2
530 - Physics
2
900 - History & geography
2
414 - Phonology & phonetics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
630 - Agriculture & related technologies
1
720 - Architecture
1